Optimization Routes for the Bioleaching of MSWI Fly and Bottom Ashes Using Microorganisms Collected from a Natural System
Optimization Routes for the Bioleaching of MSWI Fly and Bottom Ashes Using Microorganisms Collected from a Natural System
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使用从自然系统收集的微生物对垃圾焚烧飞粉和底灰进行生物浸出的优化路线
DOI：
10.1007/s12649-019-00688-9
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发表时间：
2019
影响因子：
3.2
通讯作者：
Funari V
中科院分区：
文献类型：
--
作者：
Funari V
本文提出了一种使用微生物处理垃圾焚烧飞灰（FA）和底灰（BA）的途径，以严格评估生物沥滤是否在有效的工业应用范围内。在受控的实验室环境中，使用从自然系统中分离的培养物研究了BA和FA中的金属浸出，其中优势菌株是嗜酸细菌，主要是氧化硫酸硫杆菌和氧化亚铁酸硫杆菌。微生物群落（主要是嗜酸性，S-和Fe-氧化细菌）是直接从溢流和池塘的沉积物-水界面的自然系统附近的采矿现场。在250 mL烧瓶中进行预培养，然后适应不同的底物（FA和BA）。在起始pH为4时，对BA和FA评估了不同材料预处理和元素硫浓度的影响。BA和FA底物的生物浸出经历了良好的金属提取率，最佳持续时间为两周。结果表明，FA对Zn、Cu和Pb的去除率均在90%以上，BA对Cu、Zn和Pb的去除率分别为100%、80%和20%。使用再生离子交换树脂的批量实验对于金属回收没有很好的表现，但可以作为有价值的去污步骤。这里使用的FA和BA技术可用于城市采矿目的（例如灰烬和其他富含膳食的人为废物），但也可用于采矿业中的低品位矿石，有助于资源回收或净化议程。
This paper presents a route for the treatment of MSWI fly (FA) and bottom ashes (BA) using microorganisms to critically assess whether bioleaching is within reach of effective industrial application. The leaching of metals from BA and FA was investigated in a controlled laboratory environment using a culture isolated from a natural system where the dominant strains are acidophilic bacteria, mainlyAcidothiobacillus thiooxidansandAcidothiobacillus ferrooxidans. The community of microorganisms (mostly acidophilic, S- and Fe-oxidizing bacteria) was collected directly from overflows and ponds at the sediment–water interface of a natural system near a post-mining site. Pre-cultivation was done in 250 mL flasks followed by the adaptation to the different substrates (both FA and BA). The effect of different material pre-treatment and elemental sulphur concentrations were evaluated for both BA and FA, at a starting pH of 4. The bioleaching of BA and FA substrates experienced good yields of metal extraction with an optimum duration of two weeks. The results showed that more than 90% Zn, Cu, and 10% Pb are removed from FA; while 100% Cu, 80% Zn and 20% Pb are removed from BA samples. Batch experiments with regenerating ion-exchange resins did not perform well for metal recovery, but could serve as a valuable decontamination step. The techniques used here with FA and BA can be used for urban mining purposes (e.g. ashes and other meal-rich anthropogenic wastes), but also low-grade ores in the mining industry, contributing to resource recovery or decontamination agendas.
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影响因子：
2.2
作者：
Cappelletti M;Ghezzi D;Zannoni D;Capaccioni B;Fedi S
通讯作者：
Fedi S
对城市固体废物焚烧 (MSWI) 底灰中骤冷产物的形成进行建模。
影响因子：
8.1
作者：
Kanawut Inkaew;Amirhomayoun Saffarzadeh;T. Shimaoka
通讯作者：
T. Shimaoka
利比奥拉铜矿区（意大利利古里亚亚平宁山脉）与硫化物氧化相关的金属分布和环境问题
影响因子：
3.9
作者：
E. Dinelli;F. Lucchini;M. Fabbri;G. Cortecci
通讯作者：
G. Cortecci
影响因子：
8.1
作者：
Funari, Valerio;Braga, Roberto;Meisel, Thomas
通讯作者：
Meisel, Thomas